Mass as oppossed to Rip. Muscles with very little fat look much nicer than the same sized muscle with fat, but also adds an element of feminism when not balanced with Pure Size iota for iota. That is what actually impresses me about M2, he is huge, but not too bulky at the same time! Have you tried M3? I've tried to get a big figure out of him, but hes much more ripped than massive for sure. = )